Ore-gate.



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D R E Ti A T E.

(Application led Feb. 1 1, 1901.)

2 Sheets-Sheet I.

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INJENv-on J4; 7a f @gua Patented oct. 22, 190|.

A. M. Lem.

OBE GATE.

(Application filed Feb. 11, 1901.)

culo Model.)

2 Sheets-Shut 2.

INVENTQR:

WITNESSES:

TToRNEY.

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UNITED STATESl PATENT OFFICE.

ARVID M. LEVIN, OF WILKINSRURG, PENNSYLVANIA, ASSIGN OR TO'THE BROWNHOISTING MACHINERY COMPANY, A CORPORATION OF DELA- WARE.

ORE-'.GATE.

SPECIFICATION forming part of Letters lPatent No. 685,153, dated October22, 1901. Applioation filed February 1l, 1901. Serial No. 46.814. (Nomodel.)

To a/ZZ whom it may concern:

Be it known that I, ARVID M. LEVIN, a subject of the King of Sweden andNorway, residing at Wilkinsburg, in the county of Allegheny and State ofPennsylvania, have invented new and useful Improvements in Ore- Gates,of which the following is a specification.

Ore-gates now in general use are arranged to slide either vertically orhorizontally across the discharge. One objection to this form of gate isthat it cannot always be fully closed at the instant desired, for aboulder or other obstruction in the ore may stop its progress bybecoming lodged between the extremity of the gate and the wall of thechute and which must bevallowed to passdown or be forced back before thegate can be closed, in the meantime permitting ore to pass down over oraround the obstruction in excess of the quantity desired; also, theoperation of sliding gates is sluggish and laborious, owing to theresistance of the ore which bears against the gate. To obviate theseobjections and to provide a gate of simple and effective constructionand easy of operation is the object of the present invention.

The invention consists in the novel structural features and combinationand arrangement of parts hereinafter fully described and claimed, andillustrated by the accompanying drawings, wherein- Figure l is avertical sectional View of an ore gate and chute constructed inaccordance with my improvements. Fig. 2 is a front elevation of thesame. Fig. 3 is a vertical crosssectional View taken on line 3 3 ofFig. 1. Fig. 4 is a plan view. Fig. 5 is a front elevation, and Fig. 6 aplan view illustrating actuating mechanism of modied form.

Referring to the drawings, 2 represents a bin, only a portion of whichis shown, and 3 represents supporting-posts. Secured to the exterior ofthe bin around discharge-opening 4 is a chute or spout 5, the bottom ofwhich is semicircular in cross-section, as shown.

Rotatably mounted within the chute and in concentric relation to thesemicircular bottom thereof is the segmental or semicircular gate 6,which is here shown secured to the inner end of shaft 7. This shaft hasa bearing in bracket 8, which is secured to the faced extremities 9 ofthe chute sides. On the outer extremity of shaft 7 is the segmental gear10, and meshing therewith is pinion 1l on short shaft 12, the latterbeing jonrnaled at one side of shaft 7 in forked extremity 13 of bracket8. On shaft 12 is pulley or chainwheel 14, carrying the endlesshand-operating chain 15, which depends within easy reach of the floor orground. A stop 16 projects from an upper edge of the chute into thepathof gate 6, and thus limits its movement either in opening or closing. Ifdesired, a full circular gear may be substituted for segmental gear 10.

Instead of operating the gate from the iioor it may be so arranged as tobe operated by a man positioned on the chute, such a construction beingshown in Figs. 4 and 5, wherein a bracket 17 is employed, secured in thesaine manner as bracket 8, and rising therefrom is a stand 18,supporting a short shaft 19, this shaft having at one end a pinion 2Oand at the other end tiller-wheel 2l. In this arrangement gate-shaft 7is provided with a 'full gearwheel 22, with which pinion 2O meshes.

In addition to those features of the operation which will instantlyoccur to those skilled in the ar't it may be stated that after the gatehas been opened and a suflicient quantity of ore discharged the gate inits closing movement advances through the ore with a cutting action andin such manner as to easily and effectively check and stop the flow ofore. The upper edge of the gate being straight and this being the edgethat advances through the ore when closing, any boulders or otherobstructions which it encounters are forced either downward or upward-in the chute or are lifted bodily with the gate by the straight edgethereof, falling either in front of or behind the gate, as the case maybe; but under no circumstances is it possible for an obstruction to stopthe movement of the gate and permit more ore to pass than is wanted, asis the case with sliding gates. It will be observed that the gate isshown positioned outward a short distance from the bin and also with aspace intervening between the same and the actuating mechanism, thisarrangement affording ample room for the elevation of boulders and fortheir fall in either direction Without clogging the gate or interferingin any way with its operation.

Obviously many different forms of operating mechanism may be employedWithout affecting.,r the spirit or scope of the invention, andwhile inits preferred form the invention is embodied in a curved gate arrangedto operate Within a curved chute I do not restrict myself thereto, asthe invention contemplates and is designed to include any and all formsof gates operating in or across ore and other bin spouts or dischargesin substantially the manner herein indicated.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The combination of an ore-discharge, a gate, and a journal for thegate extending longitudinally of the discharge, whereby the gate isadapted to turn transversely across the discharge, substantially asshown and described.

2. The combination of an ore-discharge, a journal above the plane of thedischarge and extending longitudinally thereof, and a gate mounted onthe journal and adapted to turn transversally across the discharge,substantially as shown and described.

3. The combination ofau ore-bin chute open at the top,- and a verticallyand transversely rotatable gate operative within the chute at a pointremoved from the inner end thereof, thereby leaving an open top spacebetween the gate and the inner end of the chute, substantially as shownand described.

4. The combination of an ore-bin chute havingacurved bottom and anupright gate Within the chute and rotatable transversely thereof, aportion of the gate edge being straight and a portion thereof curvedcomplementary with the chute-bottom,substantially as shown anddescribed.

5. The combination of an ore-chute having its bottom curved incross-section, and an upright gate within and rotatable transversely ofthe chute, the lower portion of the gate being curved complementary tothe chute, sub' stantially as shown and described.

6. The combination of a chute having its bottom curved in crosssection,an upright gate journaled above the center of the chute and rotatabletransversely thereof, the journal being adjacent the upper edge of thegate which is substantially straight, with the edge of the lower portionof the gate curved complementary with the chute, substantially as shownand described.

7. The combination of an ore chute, a bracket secured thereto, a shaftjournaled in the bracket,- a rotatable gate secured to the shaft andoperative in the chute, and means for actuating the shaft, substantiallyas shown and described.

S. The combination of an ore chute, a bracket secured thereto, a shaftjournaled in the bracket, a rotatable gate secured to the shaft andoperative in the chute, a gear-Wheel on the shaft, a second shaftcarrying a pinion meshing with said gear-\vheel, and actuating means onthe second shaft, substantially as shown and described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses. l

ARVID M. LEVIN.

Witnesses:

J. M. N Esnir, ALEX. S. MABoN.

